EWDL 221 electronic controller for refrigerating units

THE USER INTERFACE Fig. 1

Frontlet of instrument

Table 10).

Table 3 Icons ICON

USE OF THE KEYS The keys of the instrument permit both the utilisation of the menu and the direct activation of a function.

INDICATION

DETAILS

alarm active

Permanently lit up in the event of an alarm, flashing in the event of a silenced alarm

temperature range

Flashing in the Setpoint programming or in parameters programming

defrost active

Permanently lit up in the event of defrosting in progress, flashing in the event of manual defrost

compressor

Permanently lit up in the event of compressor valve working, flashing in the event of delay in activating and for the presence of external alarm

Table 1 Keys and menu

PL2 = machine parameters (level 2) This folders contains the parameters required by the manufacturer and the assembler for the optimum configuration of the controlling machine (see Table 7 and Table 10). AL = alarms It is possible to scroll through the list of all the active alarms using the UP and DOWN keys (see Table 9). St = machine status In this folder the status of the inputs and outputs or the machine status can be viewed (see Table 5). Table 5 Machine status table

KEY

DESCRIPTION

FUNCTION

UP key

Scrolls through the menu items Increases the values Scrolls through the menu items Decreases the values

DOWN key

ESC key

ENTER key

Returns to the previous level

Accesses the menus Confirms the commands

Table 2 Keys and functions set directly KEY

DESCRIPTION

FUNCTION

UP

Activates manual defrost function

ESC

Accesses the setpoint

DOWN

Programmable

ENTER

Programmable

If called for, a password will be required. There are two different passwords. The first password (PA1) is for access to the parameters in the PL1 and FnC folders. The second password (PA2) is for access to the parameters in the PL2 and FPr folders. (see Fig. 2, Menu flowchart). At this point in the proceedings it is possible to scroll through the contents of each folder, amend them or use the functions provided in each of the latter. If you do not use the keyboard or hit the key within 15 seconds, the last value displayed on the screen is confirmed and you return to the previous screen. DESCRIPTION OF FOLDERS FnC = functions This folder permits the manual activation of the functions it contains (see Table 4). Table 4 Menu table

USE OF THE MENUS ACCESS TO THE MAIN MENU The programming of the instrument is organised by menu (see Fig. 2, Menu flowchart), which can be accessed in two ways: 1. by keeping the key pressed down for 5 sec. (path A). 2. by keeping the key pressed down for 10 sec. (path B). NAVIGATION OF THE MENUS In order to access the contents of each folder, just press the key once.

FUNCTION

DESCRIPTION

OFF ON DEF LON LOF COF CON AON AOF tAL OSP SP

Switches off the instrument Switches on the instrument Activates the manual defrost process Activates the light relay Deactivates the light relay Deactivates the continuous cycle Activates the continuous cycle Activates the auxiliary relay Deactivates the auxiliary relay Silencing the Alarm Link Activates the auxiliary Setpoint Activates the main Setpoint

PARAMETER

VALUE

Pb1-Pb2 sensor 1-2 OU1-OU2 outputs 1-2

sensor 1-2 value “y” or “n” output “active” or “not active”

TC = day, hour and minutes The tC folder is present in the menu of those instruments equipped with an optional internal clock (RTC) and permits the user to view the hour and day of the week in a cyclic manner (d00, H00, ’00). FPr = copy card Use of the contents of this folder enables the user to carry out two operations (see Table 6): 1. Upload: download the programming parameters from the instrument to a copy card. 2. Download: download the programming parameters from a copy card to the instrument. Table 6 Copy card table FUNCTION

RESULT

“n” or “y” dL - Dowload “n” or “y” UL - Upload Note: “y” or “n” indicate if the operation has concluded satisfactorily (y) or not (n).

RAPID ACTIVATION PL1 = user parameters (level 1) This folders contains the parameters required by the end user in order to make any minimum amendments to the programming parameters (see Table 7 and

Certain specific functions (ON/OFF, defrost, light, continuous cycle, auxiliary) can be associated with keys on the frontlet by means of appropriate programming (see Table 7 and Table 10, “Machine set-

up” parameters). A description of the direct functions set in the factory is presented (see Table 2). DISPLAY AND DEFINITION OF THE SETPOINT VALUE In order to view the Setpoint value, keep the key pressed down for five sec. The Setpoint value will appear on the display and the temperature gauge icon (I2) will begin to flash. In order to vary the Setpoint value operate, within 15 seconds, on the keys and

Table 7 Description parameters table PARAMETER DESCRIPTION dyC (1) HrC (1) ‘PC (1) SEt diF

HSE LSE OSP

If the parameter LOC = y is not possible to modify the Setpoint.

Cit

MANUAL ACTIVATION OF THE DEFROST CYCLE Manual activation of the defrost cycle is achieved: 1. By keeping the key pressed down for five seconds. 2. By activating the programmable digital input.

Cct

KEYPAD LOCK The instrument anticipates, by means of appropriately programming the “Loc” parameter (see Table 6, “Miscellaneous” parameters), the possibility of disabling the functioning of the keypad. In the event the keypad is locked, the user can always access the programming MENU by pressing the key

OdO

Cat

Ont OFt dOn dOF

dbi

dty

dit dtU

dCt

PARAMETERS The parameters can be viewed in two different tables: the first (see Table 7) describes the function of the parameter, while the second (see Table 10) lists the characteristics of each parameter.

ADVANCED SETTINGS LINK Up to six devices can be connected by using the LINK function. One of these devices will be designated as the MASTER. The MASTER device will send commands to the other devices, which will be treated as SLAVE device. In this way the functions of the devices can be used better. Master The device that manages the network by sending commands to the slaves. Slave The device that contains autonomous controls and executes the commands that arrive from the master. Echo Attention: only for EWDL 001. Device with function that displays only the values associated with the instrument. For more information please see the technical data sheet.

dt1 (1) dt2 (1) dt3 (1) dt4 (1) dt5 (1) dt6 (1) dOH dEt dSt POS

dPO dri tcd FSt FPt Fdt dt dFd Afd FCO Fod dSd

dLt OFL

dOd

SETTING OF CLOCK (1) Day clock: day 0 = Sunday; … ; day 6 = Saturday. Hour clock. Minute clock. COMPRESSOR CONTROLLER Setpoint: value ranging between the set minimum (LSE) and the set maximum (HSE). Operating differential of the setpoint. For applications in the refrigeration sector the compressor will cut off on reaching the Setpoint value set (on indication of the control sensor), only to restart at a temperature value equal to the Setpoint plus the differential value. Note: It will not accept a 0 value. Maximum value attributable to the setpoint. Minimum value attributable to the setpoint; normally set at the lowest value measurable by the sensor. Offset setpoint: temperature value to be added algebraically to the setpoint in the event of a reduced set enabled by the function present in the menu; by the day-night controller or by digital input. Minimum activation time of the compressor before its possible deactivation. Expressed in minutes or seconds according to the “dtU”. If set at 0 it is not active. Maximum activation time of the compressor before its possible deactivation. Expressed in minutes or seconds according to the “dtU”. If set at 0 it is not active. Duration of continuous cycle. This is the effective operating time of the compressor. COMPRESSOR PROTECTION CONTROLLER ON time of the compressor due to sensor failure. OFF time of the compressor due to sensor failure. Start-up delay. The parameter indicates that a protection is active on the realisation of the compressor/general relay. Delay after shut-down. The parameter indicates that a protection is active on the realisation of the compressor/general relay. At the very minimum, the time indicated must elapse between shut-down of the compressor relay and the subsequent start-up. Delay between start-ups. The parameter indicates that a protection is active on the realisation of the compressor/general relay. At the very minimum, the time indicated must elapse between two subsequent start-ups of the compressor relay. Activation delay of the instrument start-up outputs or after a lack of voltage; expressed in minutes. DEFROST CONTROLLER Execution mode of defrost process: 0 = electric defrosting; 1 = defrosting by inversion of cycle (hot gas); 2 = free (the compressor relay is disengaged from the defrosting functions; continue in this way to regulate on the setpoint). Interval between one defrost cycle and the subsequent one; expressed in hours and in minutes in relation to the “dtU”. Time measurement unit for intervals/length of defrosting. 0 = interval between two defrost cycles in hours, duration of defrost cycle in minutes; 1 = interval between two defrost cycles in minutes; duration of defrost cycle in seconds. Defrost interval reckoning mode. 0 = only the running time of the compressor is counted; 1 = the running time of the instrument is counted; 2 = defrosting takes place every time the compressor shuts down. Time of commencement of defrost cycle 1 Time of commencement of defrost cycle 2 Time of commencement of defrost cycle 3 Time of commencement of defrost cycle 4 Time of commencement of defrost cycle 5 Time of commencement of defrost cycle 6 Delay in commencement of defrost cycle; expressed in minutes. Defrost cycle Time out; expressed in minutes or seconds in relation to the “dtU”. Defrost cycle conclusion temperature. Postponement of activation of defrost controller in the event of request during the continuous cycle. Postpones the activation of the defrost controller until conditions dictating defrost cycle exist. y = yes; n = no. Request for activation of the defrost controller on start-up. y = yes; n = no. By means of this parameter it is possible to decide if, on request of a manual defrost cycle, the reckoning for the defrost interval must be set to zero or not. y = yes; n = no. Minimum compressor On or OFF time before defrost. FAN CONTROLLER Fan temperature lock: a value read by the defrost sensor which exceeds that set causes the halting of the fans. It characterises the “FSt” parameter which can be expressed as an absolute temperature value (FPt = 0) or as a relative value with respect to the setpoint (FPt = 1). Delay in activating the fans; expressed in minutes. Drainage time; expressed in minutes. Permits the user to select, or otherwise, the exclusion of the evaporator fans during defrosting. n = no; y = yes Alarm/fan set differential: temperature difference between the setting off and disconnection of the minimum or maximum alarm or of the fans. Permits the user to select, or otherwise, the blocking of the compressor fans in OFF mode. n = fans switched off; y = fans thermostated. Fan status with door open: n = fans switched off; y = fans unaltered. LIGHT CONTROLLER Light relay enabled by micro-door. n = door open, light not switched on; y = door open, light switched on. Deactivation delay (switch off) of light relay (cold cell light). Light key always deactivates (switch off) light relay (cold cell light). Enables the switching off of the cold cell light by using the related key even if the switch off delay after the closure of the door (dLt parameter) is active. n = function not enabled; y = function enabled. Digital input (micro-door) switch off use. Any eventual protection timing will nonetheless be respected. n = do not switch off use; y = switch off use.

The user can use the LINK network to EWDL 221

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PARAMETER L00 L01 L02 L03 L04 L05 E00 (1)

E11 E12 E10 E21 E22 E23 E20 E31 E32 E33 E30

(1) (1) (1) (1) (1) (1) (1) (1) (1) (1) (1)

dEA FAA Att

HAL LAL PAO

dAO OAO tdO CAO tAO dAt EAL

AOP

LOC

PA1 PA2 ndt CAL CAI

LdL HdL dLc

dro ddd

EWDL 221

DESCRIPTION LINK CONTROLLER Used for selecting the instrument as the Master (1), Slave (2 to 6). Refers only to Master. Number of Slaves connected to the network (0 to 5). Refers only to Master. Echoes connected to network. 0 = not connected; 1 = connected. Refers to Master and Slave. Simultaneous/sequential defrosting. Master 0 = simultaneous; 1 = sequential. Slave 0 = ignore; 1 = accept. Refers only to Slave. Distributed display. 0 = ignore; 1 = accept. Refers only to Slave. Activation of network functions. 0 = ignore; 1 = accept. DAY/NIGHT CONTROLLER (1) Functions enabled during events: 0 = control disabled; 1 = set reduced; 2 = set reduced+light; 3 = set reduced+light+aux. Hour of commencement of 1st event (all the days of the week). Minute of commencement of 1st event. Duration of 1st event. Hour of commencement of 2nd event (day indicated by the E23 parameter). Minute of commencement of 2nd event. Day of commencement of 2nd event: 0 = Sunday; 6 = Saturday. Duration of 2nd event. Hour of commencement of 3rd event (day indicated by the E33 parameter). Minute of commencement of 3rd event. Day of commencement of 3rd event: 0 = Sunday; 6 = Saturday. Duration of 3rd event. COMMUNICATIONS Device address: indicates the address of the equipment to the control protocol. Series address: indicates the series of the equipment to the control protocol. ALARMS Mode of interpreting the value of the HAL and LAL parameters. 0 = interprets the values as absolutes (not referring to the setpoint); 1 = interprets the values as relative with respect to the setpoint. Maximum temperature alarm. Temperature value whose excess upwards will determine the activation of the alarm signal. Minimum temperature alarm. Temperature value whose excess downwards will determine the activation of the alarm signal. Exclusion of the alarms on start-up of the instrument, both with key on/off or after a failure in the power supply. In the event of reactivation of additional delay times the highest among these will be valid. Exclusion of alarm after defrosting. Alarm signal delay after deactivation of digital input (door closure). Alarm signal time-out after activation of the digital input (door opening). Alarm exclusion time after continual cycle. Delay time for signalling of temperature alarm. Alarm signal for defrost concluded due to time-out. n = activate alarm; y = do not activate alarm. External alarm blocking controllers. Enables the locking of the compressor, defrost and fan controllers if the digital input (configured as an external alarm) is activated. n = does not lock; y = lock. Indicates the polarity type of the relay/buzzer configured as an alarm. 0 = alarm active and output disabled; 1 = alarm active and output enabled. MISCELLANEOUS Keypad lock (blocks the activation of the primary functions). With the keypad disabled, viewing of the Setpoint is only permitted by means of the key associated with direct functions. However it remains possible to enter parameter programming and modify the status of the parameter so as to enable the unlocking of the keypad. n = do not lock; y = lock. Password 1 (blocks activation and the modification of parameters only). Password 2 (blocks activation and the modification of parameters only). DISPLAY Display mode of the temperature on the display. n = full number; y = decimal number. Gauging. Positive or negative temperature offset which is added to the value read by the thermostating sensor before being displayed and used for control purposes. Determines if the value of the “CAL” parameter is added algebraically to the sole value displayed or to the sole value used by the controllers, or to both. 0 = sum with the sole temperature displayed; 1 = sum with the sole temperature which remains unaltered; 2 = sum with the temperature displayed which is also used by the controllers. Minimum value of the sensor which can be viewed on the display. Maximum value of the sensor which can be viewed on the display. Display mode during the defrost cycle. 0 = displays the temperature read by the cold cell sensor; 1 = displays the temperature read by the cold cell sensor at the time of commencement of defrosting; 2 = displays the “dEF” label during defrosting. Once defrosting and de-tearing has finished, the device will continue to display the information anticipated until the cold cell sensor reaches the setpoint value. If set at zero, the display does not entail the reaching of the setpoint. °C or °F selection. 0 = °C; 1 = °F. Display of the basic status. 0 = sensor 1; 1 = sensor 2; 2 = sensor 3: 3 = setpoint.

defrost the refrigerator. The master sends the defrost command which can take effect either immediately or later on without interfering with the normal protection or delays of each individual device. The master can also turn on all the slaves or shut off the lights, shut off alarms, auxiliary set point, auxiliary on/off. The master can also synchronize the screens of all the echoes with the screen of the master or a slave. The functions can be associated with the devices by setting the appropriate parameters. see Table 7 and Table 8, Link control parameters. COPY CARD The copy card is an optional card that connects directly with the instrument through the TTL serial port. By accessing to the parameters of the FPr directory through the keyboard (see Table 6), it will be possible to record the instrument parameter setting and successively download the same information on another instrument. To use the copy card it is necessary for the instruments to be (see label on the instrument) compatible. ATTENTION: if the instrument is provided with the serial port RS-485, alternative to the TTL one, the use of the copy card will not be possible. THE TELEVIS SYSTEMS You can connect to the Televis systems by the TTL serial port using the EWRS 485 interface module or directly by the optional RS–485 serial port. DAY/NIGHT CONTROL This requires the optional RTC function. The Day/Night control is used to set a weekly schedule.

DIAGNOSTICS The alarm icon indicates an alarm condition. Breakdowns are indicated on the screen (see Table 8). Table 8 Error table DISPLAY

ERROR

E1 E2

Cold cell sensor fault Defrost sensor fault

BREAKDOWNS When the sensor detects an error condition: • the code E1 is displayed • the compressor is activated as indicated by the "On" and "Off" parameters if programmed for the duty cycle or: Ont

Oft

Compressor output

0 0 >0 0 0 >0

OFF OFF ON D.C.

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DESCRIPTION

PARAMETER

MACHINE SETTINGS Key activation time. Aux.-light-micro door key/input active when instrument in OFF mode. n = not active; y = active Configuration capacity of digital output 1. H21 0 = compressor; 1 = defrost; 2 = fans; 3 = alarm; 4 = auxiliary; 5 = light; 6 = on/off; 7 = 2nd evaporator. Configuration capacity of digital output 2. H22 0…7 same as H21. Configuration output buzzer. H23 (2) 0…7 same as H21.3=buzzer enabled; 4= buzzer disabled; 0-2,5-7= not used Configuration capacity of UP key. H31 0 = disactivated; 1 = on/off; 2 = defrost; 3 = light; 4 = continuous cycle; 5 = auxiliary. Configuration capacity of DOWN key. H32 0…5 same as H31. Configuration capacity of ESC key. H33 0 = disactivated; 1 = on/off; 2 = defrost; 3 = light; 4 = continuous cycle; 5 = auxiliary; 6 = Setpoint. Capacity Control sensor presence. y = sensor present; n = sensor not present. H41 Evaporator sensor presence. y = sensor present; n = sensor not present. H42 Release firmware reL Table of parameters tAb (1) PLEASE NOTE: requires the RTC function (optional). (2) PLEASE NOTE: in the version with the buzzer. H02 H06

Otherwise, when the defrost sensor detects an error condition: • the code E2 is displayed • the defrost process is terminated. All the alarms can be seen in the alarms (AL) folder (see Table 9). Table 9 Alarm table DISPLAY

ALARM

High temperature alarm (referring to cold cell sensor or sensor 1) Low temperature alarm (referring to AL1 cold cell sensor or sensor 1) End of defrost cycle due to time-out Ad2 External alarm AE Master-Slave lost communication E7 Clock battery alarm E10 Memory alarm Er Note: in order to silence alarm press any key.

absolute temperature value or a differential with respect to the setpoint. When an alarm status occurs, if no alarm exclusion phases are underway (see alarm exclusion parameters), the alarm set icon is lit up and the buzzer, and/or the relay configured as an alarm, is activated. The occurrence of this alarm does not in anyway effect the control activities in progress. This alarm status can be viewed in the “AL” folder.

AH1

When an alarm status occurs, it is possible to silence the buzzer and/or relay configured as an alarm, by pressing any key. The buzzer is optional and is present on the EWDL 221 B model. MINIMUM AND MAXIMUM TEMPERATURE ALARMS Regulation of the minimum and maximum temperature alarms refers to the cold cell sensor. The temperature limits defined by the “HAL” (maximum temperature alarm) and “LAL” parameters (minimum temperature alarm) are characterised by the “Att” parameter which specifies if they represent the EWDL 221

DEFROST ALARM In the event of the conclusion of the defrost process as a result of time-out (rather than as a result of reaching the correct defrost conclusion temperature picked up by the defrost sensor), an alarm will be generated and consequently the alarm icon will be lit up. This alarm status can be viewed in the “AL” folder with the “Ad2” label. Automatic re-setting occurs in correspondence with the start of a subsequent defrost process. In this alarm status, the user can switch off the alarm icon by pressing any key.

FITTER ASSEMBLY The instruments belonging to the DIGIFROST series range have been conceived for panel mounting purposes. Cut a hole and insert the instrument fastening it with the supplied bracket. The distance between two coupled devices is 79 mm.

With the appropriate adapter, the instruments can also be assembled on holes for the standard ELIWELL 32x74 mm. The panel thickness must be between 0.5 mm and 7 mm. The room temperature range admitted for correct operation is between -5 e 60 °C. Furthermore, avoid mounting the instruments in locations subject to high levels of humidity and/or dirt: said instruments are in fact suitable for use in environments with an ordinary or normal level of pollution. Make sure that the area near to the cooling slits is left aerated.

ELECTRICAL CONNECTIONS The instrument is equipped with a screw terminal board for the connection of electric cables with a maximum element 2.5 mm2 (only one conductor per terminal for power connections). Never work on electrical connections when the machine is switched on. The outputs on the relays are voltage-free. Do not exceed the maximum electrical current permitted; in the event of greater loads use a contact with a suitable capacity. Ensure that the voltage of the power supply conforms to that required by the instrument. The sensors do not require connection polarities and can be extended using a normal bipolar cable (remember that extending the sensors adversely affects the conduct of the instrument in terms of electromagnetic compatibility EMC: take great care when wiring). The sensor cable, the serial Link and the power supply cable must be kept at a distance from the high voltage cables. The power contacts of the instrument and the contacts of the sensors have one main insulation coating compared to the relay contacts. As a result, these contacts (power supply and sensors) and the parts that are accessible during normal use and/or possible SELV areas (extremely low safety voltage) must at least be ensured additional insulation. For example, if the sensors are normally accessible, they must be equipped with additional insulation. The standard resin-bonded sensors, normally supplied by Eliwell, possess this characteristic. Reinforced insulation must be guaranteed between the relay contacts and the accessible parts. Instruments equipped with RS-485 come supplied with a transformer and small cable for the power supply of the serial port. A terminal board is mounted on the transformer which then enables repetition of the RS-485 signal.

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CONDITIONS OF USE PERMITTED USE For safety reasons the instrument must be installed and used according to the instruction provided and in particular, under normal conditions, parts bearing dangerous voltage levels must not be accessible. The device must be adequately protected from water and dust as per the application and must also only be accessible via the use of tools (with the exception of the frontlet). The device is ideally suited for use on household appliances and/or similar refrigeration equipment and has been tested with regard to the aspects concerning European reference standards on safety. It is classified as follows: • according to its manufacture: as an automatic electronic control device to be incorporated by independent mounting; • according to its automatic operating features: as a 1 B-type operated control type; • as a Class A device in relation to the category and structure of the software. USE NOT PERMITTED Any other use other than that permitted is de facto prohibited. It should be noted that the relay contacts provided are of a practical type and therefore subject to fault. Any protection devices required by product standards or dictated by common sense due to obvious safety reasons should be applied externally.

LIABILITY AND RESIDUAL RISKS Eliwell shall not be liable for any damages deriving from: - installation/use other than that prescribed and, in particular, that which does not comply with safety standards anticipated by regulations and/or those given here-

in; - use on boards which do not guarantee adequate protection against electric shock, water or dust under the conditions of assembly applied; - use on boards which allow access to dangerous parts without the use of tools; - tampering with and/or alteration of the products; - installation/use on boards not complying with the standards and provisions of current legislation.

TECHNICAL DATA Frontlet protection: IP65. Casing: plastic in PC+ABS resin. Dimensions: frontlet 72x30 mm, depth 60 mm. Mounting: panel mounted, with drill holes of 58x25,4 mm (+0,2/–0,1 mm) in diameter. Room temperature: –5…60 °C. Storage temperature: –30…75 °C. Display range: –50…110 °C without decimal point, –50.0…99.9 with decimal point, on a 3 digit + sign display. Analog inputs: two standard NTC type supplied or PTC (according to availability). Digital outputs: one SPDT output and one SPST output on 8(3)A 250V AC relay, configurable. NOTE: in the event the buzzer is present, the relay with output on terminal 3 will be 5(2)A 250V. Serial outputs: standard TTL type supplied; optional RS-485. RTC memory retention: approximately 36 hours. Temperature range: from -50 to 110 °C (from –40 to 230 °F). Accuracy: the best of 0.5% at bottom of scale. Definition: 1 or 0.1 °C. Power consumption: 1.5 VA maximum Power supply: 12 Va/C ±10%.

OPTIONALS Buzzer RS-485 RTC

B S C

NOTE: for the optionals, see label on the instrument.

DISCLAIMER This manual and its contents remain the sole property of Invensys Controls Italy s.r.l., and shall not be reproduced or distributed without authorization. Although great care has been exercised in the preparation of this document, Invensys Controls Italy s.r.l., its employees or its vendors, cannot accept any liability whatsoever connected with its use. Invensys Controls Italy s.r.l. reserves the right to make any changes or improvements without prior notice.

Invensys Controls Italy s.r.l via dell'Industria, 15 Zona Industriale Paludi 32010 Pieve d'Alpago (BL) ITALY Telephone +39 0437 986111 Facsimile +39 0437 986066 Email [email protected] Internet http:/www.climate-eu.invensys.com 2/2001 ing cod. 9IS21122 EWDL 221

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Table 10

Complete parameters table

PARAMETER

DESCRIPTION

LEVEL

RANGE

DEFAULT

U.M.

dyC HrC ‘PC SEt diF HSE LSE OSP Cit Cat Cct Ont OFt dOn dOF dbi OdO dty dit

day Clock Hour Clock ‘ (minutes) Clock SEtpoint diFFerential High SEt Low SEt Offset SetPoint Compressor (min) On time Compressor (max) On time Cycle continuos time On time compressor OFF time compressor dealy On compressor dealy OFF compressor delay between interval Output delay at On defrost type selection defrost interval time

1 1 1 2 1 1 1 2 2 2 2 1 1 1 1 1 1 2 2

0 0 0 0 2 50 -50 0 0 0 0 10 10 0 0 0 0 0 6

dtU dCt dt1 dt2 dt3 dt4 dt5 dt6 dOH dEt dSt POS dPO dri tcd FSt FPt Fdt dt dFd Afd FCO Fod dSd dLt OFL dOd L00 L01 L02 L03 L04 L05 E00 E11 E12 E10 E21 E22 E23 E20 E31 E32 E33 E30 dEA FAA Att HAL LAL PAO dAO OAO tdO CAO tAO dAt EAL AOP LOC PA1 PA2 ndt CAL CAI

defrost time unit defrost count type defrost time 1 defrost time 2 defrost time 3 defrost time 4 defrost time 5 defrost time 6 defrost Offset defrost Endurance time defrost stop temperature POStpone defrost defrost at Power ON defrost reset interval time compressor for defrost Fan Stop temperature Fan Parameter “FSt” type Fan delay time drainage time defrost Fan disable Alarm fan differential Fan Compressor OFF Fan off (with opened) door diSable light with opened door disable Light time disable with opened door digital Output door Used for selecting the instrument as the Master Number of Slaves connected to the network Echoes connected to network Simultaneous/sequential defrosting. Distributed display Activation of network functions Functions enabled during events Hour of commencement of 1st event Minute of commencement of 1st event Duration of 1st event Hour of commencement of 2nd event Minute of commencement of 2nd event Day of commencement of 2nd event Duration of 2nd event Hour of commencement of 3rd event Minute of commencement of 3rd event Day of commencement of 3rd event Duration of 3rd event dEvice Address FAmily Address Alarm temperature type High ALarm Low ALarm Power on Alarm Override defrost Alarm Override Output Alarm Override time-out door Open Cont. cycle Alarm Override time Alarm Override defrost Alarm time-out External Alarm Lock Alarm Output Polarity keyboard LOCK Password 1 Password 2 number display type CALibration CALibration Intervention

2 2 1 1 1 1 1 1 2 1 2 2 2 2 2 1 2 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 2 1 2 2 2 1 1 2 2 2 2

0…6 0…23 0…59 LSE...HSE 0.1...30.0 LSE..150 -55.0...HSE -15.0...15.0 0...250 0...250 0...99 0...250 0...250 0...250 0...250 0...250 0...250 0/1/2 0...31 0...250 0/1 0/1/2 0…23…off 0…23…off 0…23…off 0…23…off 0…23…off 0…23…off 0...59 1...250 -55...150 n/y n/y n/y -31...31 -50…50 0/1 0...250 0...250 n/y 1.0...50.0 n/y n/y n/y 0...31 n/y n/y 1…6 0…5 0…1 0…1 0…1 0…1 0...3 0...23 0…59 0...99 0...23 0…59 0…6 0...99 0...23 0…59 0…6 0…99 0...14 0...14 0/1 LAL...150 -50...HAL 0...10 0..999 0…10 0…250 0...99 0...250 n/y n/y 0/1 n/y 0...255 0...255 n/y -15.0...15.0 0/1/2

gg h min °C/°F °C/°F °C/°F °C/°F °C/°F min min h min min sec min min min num h min num num num num num num num num min min/sec °C/°F flag flag flag min °C/°F num min min flag °C/°F flag flag flag min flag flag num num num flag flag flag num h min h h min gg h h min gg h num num num °C/°F °C/°F h min h min h min flag flag num flag num num flag °C/°F num

EWDL 221

0 1 off off off off off off 0 30 6 y n y 0 2 0 0 0 y 2 y n y 0 n n 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 50 -50 2 60 0 0 0 0 n n 1 n 0 0 n 0 2

APPENDIX 1

PARAMETER

DESCRIPTION

LdL HdL dLc dro ddd H02 H06 H21 H22 H23 H31 H32 H33 H41 H42 reL tAb

Low display High display display Lock display read-out Display of the basic status Key activation time Aux.-light-micro door key/input Configuration capacity of digital output 1 Configuration capacity of digital output 2 Configuration output buzzer Configuration capacity of UP key Configuration capacity of DOWN key Configuration capacity of ESC key Capacity Control sensor presence Evaporator sensor presence reLease Firmware tAble of parameters

Fig. 2

LEVEL

RANGE

DEFAULT

U.M.

2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2

-55.0...150 -55.0...150 0/1/2 0/1 0/1/2/3 0…15 n/y 0…7 0…7 0…7 0…5 0…5 0…6 n/y n/y / /

-50 110 NTC / 140 PTC 0 0 0 5 y 1 0 3 2 0 6 y y / /

°C/°F °C/°F num num num sec flag num num num num num num flag flag / /

Main Menu

Menù flowchart

FPr

PA2

Tab. 6

tC

folder TC

St

Tab. 5

AL

Tab. 9

Tab. 6

Tab. 5

PL2

PA2

folder PL2

folder PL2

PL1

PA1

folder PL1

folder PL1

FnC

PA1

Tab. 4

B

ENTER key A Fig. 3

Lay-out connections

–

7 8 9 10 11 2 3 4 5 6

+

13 14 A –

WIRING 2 3 4 5-6 7-8 9 10 11 13 - 14 A

defrost relay output common N.C. defrost relay output N.O. defrost relay output compressor relay output power supply analog inputs common thermostatic sensor input defrost sensor input Link connection serial input TTL, copy card or RS-485

+

EWDL 221

APPENDIX 2